PARA — gra w odkrywanie znaków

<main><header><h1>Znajdź<br>drugą połowę.</h1><div class="score"><span>Pary</span><strong id="pairs">0 / 8</strong><span>Próby: <b id="attempts">0</b></span></div></header><div id="memory" role="group" aria-label="Karty pamięci"></div><div class="bottom"><p id="memory-status" class="status" role="status">Odkryj dwie karty.</p><button type="button" id="new-game">Nowe rozdanie</button></div></main>

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function shuffledPairs(random=Math.random){const cards='ABCDEFGHABCDEFGH'.split('');for(let i=cards.length-1;i>0;i--){const j=Math.floor(random()*(i+1));[cards[i],cards[j]]=[cards[j],cards[i]];}return cards;}
$(function(){let deck=['A','B','C','D','E','A','F','G','B','H','C','D','E','F','G','H'],open=[],found=new Set(),tries=0,locked=false,timer;function render(){const grid=$('#memory').empty();deck.forEach((letter,i)=>{const visible=open.includes(i)||found.has(i);grid.append($('<button type="button" class="card">').attr({'data-card':i,'aria-label':visible?'Karta '+(i+1)+': '+letter:'Odkryj kartę '+(i+1)}).text(visible?letter:'?').toggleClass('revealed',visible).toggleClass('matched',found.has(i)).prop('disabled',found.has(i)));});$('#pairs').text(found.size/2+' / 8');$('#attempts').text(tries);}$('#memory').on('click','button',function(){const i=Number(this.dataset.card);if(locked||open.includes(i)||found.has(i))return;open.push(i);render();$('#memory [data-card="'+i+'"]').trigger('focus');if(open.length!==2){$('#memory-status').text('Odkryto znak '+deck[i]+'. Wybierz drugą kartę.');return;}tries++;if(deck[open[0]]===deck[open[1]]){open.forEach(x=>found.add(x));open=[];render();$('#memory-status').text(found.size===16?'Wszystkie pary znalezione w '+tries+' próbach!':'Para znaleziona!');if(found.size===16)$('#new-game').trigger('focus');else $('#memory button:not(:disabled)').first().trigger('focus');}else{locked=true;$('#attempts').text(tries);$('#memory-status').text('Różne znaki. Spróbuj ponownie.');timer=setTimeout(()=>{open=[];locked=false;render();$('#memory [data-card="'+i+'"]').trigger('focus');},850);}});$('#new-game').on('click',function(){clearTimeout(timer);deck=shuffledPairs();open=[];found.clear();tries=0;locked=false;render();$('#memory-status').text('Nowe rozdanie. Odkryj dwie karty.');});render();});